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A fluidized bed reactor (FBR) is a type of reactor device that can be used to carry out a variety of multiphase chemical reactions. In this type of reactor, a fluid (gas or liquid) is passed through a solid granular material (usually a catalyst) at high enough speeds to suspend the solid and cause it to behave as though it were a fluid.
The annular fluidized bed is a new type of fluidized bed that has a specific type of motion where it moves in radial. There is relatively little axial mixing of gases and there is radial motion. The axial flow profile of the annular fluidized bed can be determined by pressure drops along the plant height, which can be divided into three major ...
Pipeline flash reactors are used as a tertiary or post treatment step in waste water treatment, either integrated in new plants or retrofitted in existing developments. [7] The PFR's shape allows it to be easily integrated into new process systems and be retrofitted into older existing systems to improve the overall system's efficiency. [8]
Oldest power station utilizing circular fluidized bed technology, in Lünen, Germany. A fluidized bed is a physical phenomenon that occurs when a solid particulate substance (usually present in a holding vessel) is under the right conditions so that it behaves like a fluid. The usual way to achieve a fluidized bed is to pump pressurized fluid ...
Solids requiring a high degree of digestion can remain in the reactors for periods up to 90 days. [3] Sugars dissolved in the liquid waste stream can be converted into gas quickly in the liquid phase which can exit the system in less than a day. UASB reactors are typically suited to dilute waste water streams (3% TSS with particle size >0.75mm).
Ebullated bed reactors are a type of fluidized bed reactor that utilizes ebullition, or bubbling, to achieve appropriate distribution of reactants and catalysts.The ebullated-bed technology utilizes a three-phase reactor (liquid, vapor, and catalyst), and is most applicable for exothermic reactions and for feedstocks which are difficult to process in fixed-bed or plug flow reactors due to high ...
The fluidized catalyst particles are shuttled between the fluidized bed reactor and a fluidized bed burner where the coke deposits are burned off, generating heat for the endothermic cracking reaction. By the 1950s, fluidized bed technology was being applied to mineral and metallurgical processes such as drying, calcining, and sulfide roasting.
Primer for Municipal Wastewater Treatment Systems (Report). EPA. 2004. EPA 832-R-04-001. ... Treatment pond; Trickle-bed reactor; Trickling filter; Ultrafiltration;
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